hyperchlorhydria

noun

hy·​per·​chlor·​hy·​dria -ˌklōr-ˈhī-drē-ə, -ˌklȯr- 

: the presence of a greater than typical proportion of hydrochloric acid in gastric juice that occurs in many normal individuals but is especially characteristic of various pathological states (as ulceration) compare achlorhydria, hypochlorhydria